Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings. Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings.
As a power distribution solutions provider, UGL Limited provides the foundation for green cities and energy efficient infrastructures. Learn more about its services.
A Comprehensive Overview of Electric Vehicle Charging using Renewable EnergyIAES-IJPEDS
The integration of PV with the electric vehicle (EV) charging system has been on the rise due to several factors, namely continuous reduction in the price of PV modules, rapid growth in EV and concern over the effects of greenhouse gases. Over the years, numerous papers have been published on EV charging using the standard utility (grid) electrical supply; however, there seems to be an absence of a comprehensive overview using PV as one of the components for the charger. With the growing interest in this topic, it is timely to review, summarize and update all the related works on PV charging, and to present it as a single reference. For the benefit of a wider audience, the paper also includes the bries description on EV charging stations, background of EV, as well as a brief description of PV systems. Some of the main features of battery management system (BMS) for EV battery are also presented. It is envisaged that the information gathered in this paper will be a valuable one–stop source of information for researchers working in this topic.
These slides present at an introduction level about the demand side management and demand response in smart micro-grid system. Later mathematical modelling and detail on optimization techniques will be covered.
Two tier energy compansation framework based on smart electric charging stationSandeshPatil99
Abstract: Traditional cars produce a lot of carbon dioxide (CO2) emissions that are ejected into the atmosphere, causes pollution and greenhouse gases today, electric vehicles (EVs) have received much attention as an alternative to traditional vehicles. The traditional vehicles are powered by internal combustion engines. The electric vehicle is developed because of the advancement in battery technology and motor efficiency. The secondary batteries are the main energy sources of the EV. Thus, energy management is the key factor in EV or Hybrid Electric Vehicles (HEV) design. Moreover, the charge capacity of the battery will influence the endurance of electric vehicles. The main challenge in the HEV is the charging time required for the batteries and insufficiency of charging stations (CS) and therefore charging within existing distribution system infrastructure is problematic. Up to now the HEV‟s CS is in the range of 100 km per charge due to the on-board energy which is needed to be optimized. The second challenge for the EV‟s is their battery capacity which ranges from 8.6KWh to 15.2KWh. The consequent disadvantage is that the charging time for above mentioned size, in a level 1 household charger (120V, 50Hz, 15-20A) is more than 15 hours. Due to these constraints, the vendor (EV charging station supplier) needs a convenient distribution system to cater to customer demand as well as maximize benefits. A special attention must be given to the charging station. In future, the number of electric vehicles will be increasing to a greater extent; these electric vehicles have to re-charge their battery in a place (i.e.) charging station, so there will be a growing need of public accessing charging stations. This will have a significant impact on the power systems like transformers, protection devices etc. With respect to the varying load, it will have an impact on the consumers and vendors due to the traffic at this station, waiting time for charging the vehicles will increase etc. Therefore both the consumer and vendor will get assistance from a communication system which shares useful data regarding the charging station, whether the charging slots are free, rate at which charging is done, cost per unit etc.
The generation revenue and demand payment assessment for pool based market mo...journalBEEI
The objective of this paper is to address the economic benefits in term of generation revenue and demand payment for the pool based market model in Malaysia electricity supply industry (MESI). In pool market model, there are issues on the benefit of the generators such as too high system marginal price (SMP) during peak demand and no revenue during low demand. Therefore, conceptual study for two bus test system in MESI involving four generators around Peninsular Malaysia is conducted to perform the economic analysis in term of generation revenue and demand assessment considering existing single buyer model and pool based market model, i.e., pool model, spot market model and the proposed model, in order to identify which market model is superior. As a result, the proposed model managed to decrease the demand payment as it is proportional to generation revenue, even though the generation revenue is at intermediate value and succeed to increase the low and medium generator’s revenue.
Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings. Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings.
As a power distribution solutions provider, UGL Limited provides the foundation for green cities and energy efficient infrastructures. Learn more about its services.
A Comprehensive Overview of Electric Vehicle Charging using Renewable EnergyIAES-IJPEDS
The integration of PV with the electric vehicle (EV) charging system has been on the rise due to several factors, namely continuous reduction in the price of PV modules, rapid growth in EV and concern over the effects of greenhouse gases. Over the years, numerous papers have been published on EV charging using the standard utility (grid) electrical supply; however, there seems to be an absence of a comprehensive overview using PV as one of the components for the charger. With the growing interest in this topic, it is timely to review, summarize and update all the related works on PV charging, and to present it as a single reference. For the benefit of a wider audience, the paper also includes the bries description on EV charging stations, background of EV, as well as a brief description of PV systems. Some of the main features of battery management system (BMS) for EV battery are also presented. It is envisaged that the information gathered in this paper will be a valuable one–stop source of information for researchers working in this topic.
These slides present at an introduction level about the demand side management and demand response in smart micro-grid system. Later mathematical modelling and detail on optimization techniques will be covered.
Two tier energy compansation framework based on smart electric charging stationSandeshPatil99
Abstract: Traditional cars produce a lot of carbon dioxide (CO2) emissions that are ejected into the atmosphere, causes pollution and greenhouse gases today, electric vehicles (EVs) have received much attention as an alternative to traditional vehicles. The traditional vehicles are powered by internal combustion engines. The electric vehicle is developed because of the advancement in battery technology and motor efficiency. The secondary batteries are the main energy sources of the EV. Thus, energy management is the key factor in EV or Hybrid Electric Vehicles (HEV) design. Moreover, the charge capacity of the battery will influence the endurance of electric vehicles. The main challenge in the HEV is the charging time required for the batteries and insufficiency of charging stations (CS) and therefore charging within existing distribution system infrastructure is problematic. Up to now the HEV‟s CS is in the range of 100 km per charge due to the on-board energy which is needed to be optimized. The second challenge for the EV‟s is their battery capacity which ranges from 8.6KWh to 15.2KWh. The consequent disadvantage is that the charging time for above mentioned size, in a level 1 household charger (120V, 50Hz, 15-20A) is more than 15 hours. Due to these constraints, the vendor (EV charging station supplier) needs a convenient distribution system to cater to customer demand as well as maximize benefits. A special attention must be given to the charging station. In future, the number of electric vehicles will be increasing to a greater extent; these electric vehicles have to re-charge their battery in a place (i.e.) charging station, so there will be a growing need of public accessing charging stations. This will have a significant impact on the power systems like transformers, protection devices etc. With respect to the varying load, it will have an impact on the consumers and vendors due to the traffic at this station, waiting time for charging the vehicles will increase etc. Therefore both the consumer and vendor will get assistance from a communication system which shares useful data regarding the charging station, whether the charging slots are free, rate at which charging is done, cost per unit etc.
The generation revenue and demand payment assessment for pool based market mo...journalBEEI
The objective of this paper is to address the economic benefits in term of generation revenue and demand payment for the pool based market model in Malaysia electricity supply industry (MESI). In pool market model, there are issues on the benefit of the generators such as too high system marginal price (SMP) during peak demand and no revenue during low demand. Therefore, conceptual study for two bus test system in MESI involving four generators around Peninsular Malaysia is conducted to perform the economic analysis in term of generation revenue and demand assessment considering existing single buyer model and pool based market model, i.e., pool model, spot market model and the proposed model, in order to identify which market model is superior. As a result, the proposed model managed to decrease the demand payment as it is proportional to generation revenue, even though the generation revenue is at intermediate value and succeed to increase the low and medium generator’s revenue.
Role of UPQC in Distributed Generation Power System: A Reviewijtsrd
The ever increasing share of renewable energy sources (RERs) in the todays scenario, the power grids are suffering from poor power quality due to the intermittent nature of wind and solar based power generating units. The led to extensive research in the field of power quality especially in voltage and frequency regulations Distributed generation involving RERs has become more popular in recent years due to technological advancement and has been started increasingly used in industry. It has become more important to understand the integration of these systems through PE interface with the existing electric power systems networks. At the same time, high frequency switching of Power Electronic interface has caused major Power Quality concerns, which has been tackled with the help of Custom power devices interfaces that has allowed DG to offers various benefits like ability to provide ancillary services, increased energy efficiency, increased functionality through improved power quality and voltage/VAR support, improved electrical system reliability by reducing the fault contributions, and flexibility in operations with various other DE sources. DG also allows the customer to have a choice while it reduces the overall interconnection costs. This paper focuses on widespread use of DG through various Renewable Energy Sources, Power Quality issues associated with the use of Power Electronic interface and use of various Custom Power Devices to improve Power Quality. It particularly evaluates the role of UPQC-DG in various modes of DG in following PQ standards. Sajid Bashir | Gagan Deep Yadav"Role of UPQC in Distributed Generation Power System: A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd11356.pdf http://www.ijtsrd.com/engineering/electrical-engineering/11356/role-of-upqc-in-distributed-generation-power-system-a-review/sajid-bashir
Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swa...sarkermu
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6857439
This is a companion presentation for the IEEE Transactions on Power System paper, "Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swapping Station".
Please make sure to reference the paper below:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6857439
M. R. Sarker, H. Pandzic and M. A. Ortega-Vazquez, "Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swapping Station," IEEE Transactions on Power Systems, 2015.
Power distribution, operation and maintenance of comilla palli bidyut samity 1Kawsar Ahmed
In this report discuss about Bangladesh Rural Electrification Board Maintenance, operation system. Also discuss about Transformer, Substation and Power distribution system
Smfir technology based transportation system and applicability of mppteSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Telecom towers have traditionally relied on Gensets and Batteries for their power backup. With these methods, the challenges of high operating costs due to maintenance, repairs and cost of fuel are well known. Fuel cells have lately emerged as a potential alternate for this application. It is a market to watch closely as further technology improvements in the coming years will happen. The time is right to further improve upon the backup power technology. The Government, TRAI and telecom operators will need to work together to make fuel cells usage mainstream. Given the competitiveness of solar power, a hybrid of fuel cell & solar could emerge as a perfect combination which is reliable, sustainable, and a green alternative in future
Demand Response Electricity Markets Dallon Kay Diamond Energy Group 20111101dallon_kay
Presentation on Demand Response in Electricity Markets, Singapore Electricity Roundtable 2011, 1st November 2011, Singapore International Energy Week 2011 "Securing Our Energy Future"
Role of UPQC in Distributed Generation Power System: A Reviewijtsrd
The ever increasing share of renewable energy sources (RERs) in the todays scenario, the power grids are suffering from poor power quality due to the intermittent nature of wind and solar based power generating units. The led to extensive research in the field of power quality especially in voltage and frequency regulations Distributed generation involving RERs has become more popular in recent years due to technological advancement and has been started increasingly used in industry. It has become more important to understand the integration of these systems through PE interface with the existing electric power systems networks. At the same time, high frequency switching of Power Electronic interface has caused major Power Quality concerns, which has been tackled with the help of Custom power devices interfaces that has allowed DG to offers various benefits like ability to provide ancillary services, increased energy efficiency, increased functionality through improved power quality and voltage/VAR support, improved electrical system reliability by reducing the fault contributions, and flexibility in operations with various other DE sources. DG also allows the customer to have a choice while it reduces the overall interconnection costs. This paper focuses on widespread use of DG through various Renewable Energy Sources, Power Quality issues associated with the use of Power Electronic interface and use of various Custom Power Devices to improve Power Quality. It particularly evaluates the role of UPQC-DG in various modes of DG in following PQ standards. Sajid Bashir | Gagan Deep Yadav"Role of UPQC in Distributed Generation Power System: A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd11356.pdf http://www.ijtsrd.com/engineering/electrical-engineering/11356/role-of-upqc-in-distributed-generation-power-system-a-review/sajid-bashir
Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swa...sarkermu
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6857439
This is a companion presentation for the IEEE Transactions on Power System paper, "Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swapping Station".
Please make sure to reference the paper below:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6857439
M. R. Sarker, H. Pandzic and M. A. Ortega-Vazquez, "Optimal Operation and Services Scheduling for an Electric Vehicle Battery Swapping Station," IEEE Transactions on Power Systems, 2015.
Power distribution, operation and maintenance of comilla palli bidyut samity 1Kawsar Ahmed
In this report discuss about Bangladesh Rural Electrification Board Maintenance, operation system. Also discuss about Transformer, Substation and Power distribution system
Smfir technology based transportation system and applicability of mppteSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Telecom towers have traditionally relied on Gensets and Batteries for their power backup. With these methods, the challenges of high operating costs due to maintenance, repairs and cost of fuel are well known. Fuel cells have lately emerged as a potential alternate for this application. It is a market to watch closely as further technology improvements in the coming years will happen. The time is right to further improve upon the backup power technology. The Government, TRAI and telecom operators will need to work together to make fuel cells usage mainstream. Given the competitiveness of solar power, a hybrid of fuel cell & solar could emerge as a perfect combination which is reliable, sustainable, and a green alternative in future
Demand Response Electricity Markets Dallon Kay Diamond Energy Group 20111101dallon_kay
Presentation on Demand Response in Electricity Markets, Singapore Electricity Roundtable 2011, 1st November 2011, Singapore International Energy Week 2011 "Securing Our Energy Future"
Voter Perceptions: Common Core State Standards and AssessmentsAchieve, Inc.
On February 25, 2014 Achieve hosted a webinar open to state leaders and partners in all 50 states on the release of Achieve’s third national poll – Voter Perceptions: Common Core State Standards & Tests – which shows solid majorities of voters support common standards, common assessments, and allowing teacher and students time to adjust to these new expectations. Chad Colby, Achieve’s Director of Strategic Communications and Outreach, was joined on the webinar by Alex Bratty, Partner with Public Opinion Strategies and Dave Walker, Vice President of Greenberg Quinlan Rosner Research, to present an overview of the findings and discuss implications for leaders at the state level. This year's poll shows that awareness of the Common Core State Standards (CCSS) is inching up, even though nearly two-thirds of those surveyed still have heard "nothing" or "not too much" about the CCSS. Of those that said they had read, seen or heard recently about the standards, opinions were almost equally split between favorable and unfavorable, yet a plurality still favor implementation. Once voters were read a brief description of the CCSS, a solid majority, 69%, favored implementing the standards. For the first time in Achieve's series of polls, voters were asked about the effect of the Common Core and new tests on accountability and teacher evaluations. Voters believe that both student testing and teacher evaluations are important and should continue during implementation. Consequences, voters said, should only come for teachers, students and schools after an adjustment period, with a majority favoring a one or two year adjustment period. For more information, visit http://www.achieve.org/meetings-webinars
Хотите заработать шикарные деньги в Российской компании, с уникальной продукцией и Планом Вознаграждения созданным для людей. За более подробной информацией зайдите на сайт http://sattva-russia.ru/ или свяжитесь с нами!
BALI, Indonesia
Are you about to plan your holiday in Bali and looking for nice and cheap or exclusive Hotels, Villas or Resorts? You need to find out more about different areas to find you the most suitable place to stay? Are you already in Bali and want to know where to eat, spa and shop or which activities you can do? Or are you more interested in Bali’s unique culture and want to explore attractions all over Bali?
It doesn’t finally matter what you are looking for in Bali, with travelling BALI – the eBook, you simply get all information you are looking for. Even more information you can get on our homepage to make you Bali Holiday simply perfect!
www.travellingbali.com
Energy storage has been in use in our society and daily life for decades. Although energy storage has not grown to be a significant part of the electric energy system, recent advancement of energy storage technologies and growing needs for energy storage in both power and transportation sectors make it possible and imperative to accelerate energy storage development, deployment, and adoption. Power systems have to balance electricity generation and consumption in real-time, gasoline and diesel fuel are still the primary sources of energy for transportation, and we generally do not have good ways to conveniently and cost-effectively store a large amount of electrical energy and use it in an on-demand manner. While we need to continue decarbonizing electric power generation through increases in renewable generation, we also need to address transportation as the main source of carbon emissions. Energy storage is an important solution to address both electrification of transportation and other industries and the variability in renewable energy such as wind and solar generation.
Bulk of the existing grid energy storage capacity is provided by pumped hydro energy storage plants that were built to support large baseload power plants such as nuclear generating stations. Battery energy systems are beginning to be deployed at a rapid pace. The requirements of energy storage in the electric grid are still evolving and may differ from those of electrical transportation. Needs for research and development to enhance energy storage performance and knowledge is summarized in the following areas:
1) Energy storage engineering and integration: Effective system integration is a challenging problem for energy storage due to the great diversity of potential applications ranging from behind-the-meter storage to large grid-connected energy storage plants. Each of these applications has its own set of constraints and performance requirements. Over the next decade, the diversity of energy storage installations will expand in the range of applications, in size and scale, and in system complexity. Effective integration is also important to achieve desired cost reduction needed to support large scale deployment. Research gaps in this area include: energy storage installations with higher power capacities and higher working voltages; streamlining engineering to hybridize and co-optimize energy storage with the rest of the system; more effective controls, sensors, and energy management systems; designing modular power converter architecture to minimize system complexity, improve reliability, and reduce integration costs; and industry standards for secure communication and interoperability.
Today’s energy company is not the same company it was 30, 40 or 50 years ago. The Exelon family of companies has had a long history of proven reliability and performance that had to evolve along the way to meet customer demands. With the increased popularity of distributed generation (solar, wind, biodiesel, etc.) along with micro grids are helping to change the foundation of the traditional utility to meet the demands of our modern economy. Join Exelon Corporation as we explore the advances we’re taking to help build a stronger and smarter foundation for our customers and energy grid.
The Complete Guide to Power Plant Software.Techugo
Our sustainable energy future depends on complete electrification and a reliable supply of renewable energy. Heat pumps are added to every home as electric vehicles replace the road. This leads to an increase in electricity demand. However, the new energy supply from solar and wind is intermittent, making it challenging to consistently deliver the energy peak produced by electrification.
Techugo an on demand app development company provides software stack for businesses. The software falls under the Residential DER category and is generally divided into three parts.
Power plant software refers to computer programs and applications that are designed to manage and optimize the operations of power plants. These software solutions can include features such as real-time monitoring of plant performance, predictive maintenance, asset management, data analytics, and reporting. They help improve plant efficiency, reduce downtime, and enhance overall plant performance.
The project involves determining real time electricity charges incurred by the residential consumers. The smart grid integrated with residential PV systems was modeled in Simulink to determine demand response in dynamic pricing environment. Based on the load demand, electricity charges were calculated and compared with flat rate charges to highlight cost savings.
The changing world of energy is making it increasingly challenging to optimize power reliability, energy costs, and operational efficiency in critical power environments such as
hospitals, data centers, airports, and manufacturing facilities. Utility power grids are getting more dynamic, facility power distribution systems are becoming more complex, and
cyberattacks threaten network stability. More competitive pressures and environmental regulations are pushing expectations for energy efficiency and business sustainability higher than ever. Addressing these challenges requires new
digital tools designed specifically to enable faster response to opportunities and risks related to power system reliability and operations.
"Next Gen Grid Tech Commercialization" for Duke University Energy Initiative ...Josh Gould
Guest lecture on "Next Gen Grid Tech Commercialization" for Duke University Energy Initiative graduate level course entitled: “Emerging Energy Technologies – From Lab to Market.” (790-01)
Flexible energy: the value of demand responseCGI Nederland
Het Koninklijk Instituut Van Ingenieurs (KIVI) organiseerde op 12 november het Jaarcongres Stad in de Delta. Daarbij stond de toekomst van steden aan de kust centraal: hoe zorgen we ervoor dat deze steden droog, leefbaar, duurzaam, veilig en bereikbaar blijven? Een complexe vraag, waarbij slimme ICT-oplossingen een grote spelen. Niet vreemd dus dat CGI bij dit congres een presentatie mocht houden. Joris Knigge ging tijdens deze presentatie op de vraag waarom we nu al moeten ‘voorsorteren’ op de komst van nieuwe slimmere energienetwerken. Een van de redenen hiervoor is dat het elektriciteitsgebruik de komende jaren gaat stijgen, onder meer als gevolg van het grotere aanbod aan elektrische vervoermiddelen. Dat levert naast uitdagingen ook kansen op. Want hoe beter de balans tussen vraag en aanbod, des te betaalbaarder wordt energie. Een overschot aan zonne-energie rond het middaguur zou bijvoorbeeld heel goed geabsorbeerd kunnen worden door elektrische auto’s.
Distribution Automation - Emerging Trends and Challenges Providing an overview of challenges, further providing a detail by introducing IEC 61850 standard and finally concluding by discussing the need of a maker approach or workshops thus enabling better skills and development at institutions.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Concordville Microgrid, presented by Eric Stein, Travis White, George Sey, PECO, Baltimore, MD, August 29-31, 2016.
1. Mobile Computing Workstations
Developing a Mobile Power Strategy
to Support Quality Care
White Paper
Which power options are right for me?
One size does NOT fit all…
2. 2Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
OVERVIEW
Hospitals today are addressing critical strategic
issues – growing patient loads, rising acuity levels,
staffing constraints, and more – by investing in mobile
computing workstations to improve nursing workflows.
Point-of-care (POC) technologies are constantly
advancing, and today’s mobile computing workstations
must be capable of supporting a diverse array of
applications, such as clinical documentation, bedside
medication delivery/bar-code medication administration
(BCMA), advanced telehealth and PACS/imaging review.
As hospitals invest in technology, it is important to
keep in mind that point-of-care applications all require
power – and must support mobile care over a full shift to
support clinician efficiency. Bedside technology – and the
power systems required to support them – varies widely
across the hospital. The demands on workstations in an
emergency room or ICU differ substantially from a typical
med-surg unit. There is no “one-size-fits-all” solution for
powering mobile computing workstations. Fortunately,
a growing number of power options offer breakthrough
performance in terms of runtime, durability, total cost of
ownership and more.
A mobile power strategy will enable hospitals to plan
ahead for growing power demands at the POC by
addressing four key issues:
1 Matching power systems to support hospital
workflows, recognizing the unique needs of different
departments.
2 Enhancing mobility and ergonomics designed
specifically for high-intensity healthcare environments.
3 Ensuring workstation compliance with safety
regulations.
4 Streamlining monitoring and maintenance.
To develop an effective mobile power strategy, hospitals
need an experienced partner. Key issues include
understanding the best uses for DC and AC power
architectures, the role of advanced battery chemistries,
how charging time impacts battery performance and
many others.
Government Support for Healthcare Technology Investment
The federal Health Information Technology for Economic and Clinical Health Act (HITECH) is making available up
to $27 billion in incentive pay for resources supporting the integration of electronic medical records (EMR) over the
next 10 years. According to the New England Journal of Medicine, that represents as much as $44,000 through
Medicare and $63,750 through Medicaid, per clinician.
Eligibility requirements are closely tied to the use of EMR and eMAR applications – with specific metrics for how
frequently patient data is captured and accessed. Mobile computing provides the point-of-care access to meet these
detailed requirements throughout healthcare facilities.
To qualify for funding, hospitals must demonstrate ‘meaningful use’ based on guidelines issued in July 2010.
Hospitals have until 2015 to achieve ‘meaningful use’ of EMR technology or face penalties in reimbursement rates.
3. 3Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
Mobile computing workstations are today’s leading POC
solution for bringing key applications to the point of
care, including:
• Improving patient care. Mobile computing
workstations save caregivers time and enable them to
spend more time with patients and educate patients
about their care.
• Improving nursing efficiency. Mobile computing
workstations support clinician workflows by bringing
real-time data, as well as needed supplies and
supporting technologies, to the point of care.
• Promoting hospital-wide efficiency. Mobile
computing helps to integrate operations, including
nursing units, pharmacy, lab, radiology and other
departments.
Power Systems: Critical to
Achieving Full Potential at
Point-of-Care
A workstation’s power system has a major impact on
the success of the hospital’s mobile computing initiative.
To help clinicians focus on delivering excellent patient
care, the power supply should enable workstations to
be used without recharging or battery swaps for an
entire shift. In addition, power systems must ensure that
mobile computing workstations are:
• Lightweight and easy to handle.
• Easy for IT/biomedical staff to maintain because
batteries are easy to monitor and rarely need to
be replaced.
• Capable of supporting a wide range of technologies
at the bedside.
In developing a mobile power strategy, hospitals
must address a wide range of considerations.
Examples include:
• Diverse workflows and applications. The power
demands in high-intensity environments such as an
emergency department, where continuous uptime
is essential, are different from other units where
workstations may be plugged into a power source
for part of the day.
• Regulatory issues. Under Joint Commission
fire safety requirements, workstations cannot
be recharged or stored in hallways. In facilities
with limited space mobile power options, such as
swappable battery systems that allow for continuous
use of their workstations, can address the issue.
• Limited IT/biomedical staff. In response to the
challenging economy, some hospitals have cut back
on non-clinical staff required to monitor and maintain
mobile computing workstations. Durability and
reliability become critical factors – and using the right
power system for the job is essential.
Understanding Your
Power System Options
Power systems represent a significant part of the
investment in mobile computing workstations. A
variety of power options are available, each offering
advantages and trade-offs in terms of runtime, weight,
and initial cost versus total cost of ownership. To
support increasing power demands at the POC, Metro
has been at the cutting edge of innovation for many
years, offering both AC and DC solutions.
4. 4Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
In developing a mobile power strategy, hospitals can
choose from several power system chemistries (see
Figure 1), including:
• Sealed lead acid (SLA), which remains a popular
choice because of its low initial cost.
• Advanced chemistries, with a variety of options
offering substantial performance advantages over
SLA, including Nickel Metal Hydride (NiMH); Lithium-
Ion Nanophosphate* (Li-Nano); and Lithium-Ion.
Figure 1 outlines eight key issues for evaluating which
power solution to choose to fit your workflow including:
• Battery life (the number of times the battery can be
re-charged)
• Battery capacity
• Runtime, which is determined by the battery’s
capacity and based on 35 watts of power draw
• Full charging time – the time required to recharge
the battery
• Output power
• Replacement cost
• Cost per cycle
• 5-year replacement
Battery Options
Lithium-
Nanophosphate
(Li-Nano)
Nickel Metal
Hydride (NiMH)
Advanced Sealed
Lead Acid (SLA)
Sealed Lead Acid
(SLA)
Li-Ion Swappable
Battery life 5,000 cycles 2,000 cycles 300 cycles 300 cycles 1,000 cycles
Battery capacity (watt
hours) 460 Wh 432 Wh 540 Wh 312 Wh 320 Wh
Battery runtime
(@ 35 watts) 12 hrs 11 hrs 12 hrs 7 hrs 8 hrs
Recharge time 4 hrs 3-4 hrs 4-6 hrs 4-6 hrs 4 hrs
Output power (watts) 120 W 120 W 120 W 84 W 120 W
Replacement cost
(including shipping) $1,700 $900 $150 $150 $2,000
Cost per cycle $0.34 $0.45 $0.50 $0.50 $2.86
5-year replacement 0 1 10 10 3
Year released 2009 2011 2009 2002 2009
Figure 1
Current Power Options
*
Nanophosphate technology is a registered trademark of A123 Systems, Inc. Metro Healthcare is an authorized user of the Nanophosphate trademark.
5. 5Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
AC vs. DC – Issues for Mobile
Power Strategy
Power architecture is also a critical issue for
workstation performance. Mobile computing
workstations can be powered by either direct
current (DC) or alternating current (AC). AC systems
require an inverter to convert battery DC power
to AC and the computer or monitor’s AC adapter
converts it back to DC. This conversion results in
power loss, less efficiency and shorter runtimes.
Conversely, the DC architecture does not require an
inverter, allowing workstations to conserve power
and operate more efficiently than an AC system.
Despite the drawbacks of AC power, both AC
and DC power options can have a place in a
comprehensive mobile power strategy. Metro’s
line-up of mobile computing workstations includes
both DC and AC solutions. AC systems are powered
only by sealed lead acid (SLA) systems, while
DC systems are supported by SLA and a variety
of advanced chemistries that offer significant
performance advantages. DC solutions are the
best option when long runtimes are essential.
However, if 10+ hours of runtime are not essential
in a hospital unit, an AC workstation may be
sufficient. Advanced workstations are available in a
high-power AC model that provides a solution for
decentralizing fixed-point technology investments –
and bringing them to the point of care where they
are most effective.
Here is an overview of four primary power options.
• Lithium-Ion Nanophosphate (Li-Nano)
• Nickel Metal Hydride (NiMH)
• Lithium-Ion Swappable Power Systems
• Sealed Lead Acid (SLA)
Lithium-Ion Nanophosphate (Li-Nano)
Introduced by Metro in 2009, Li-Nano offers vast
advantages in runtime and cycle life compared
to SLA and NiMH, providing a high-performance
lifetime power supply for mobile computing
workstations.
Li-Nano’s cycle life rating of 5,000+ is 16 times
more than conventional SLA and will typically last
the duration of workstation’s lifespan, based on
usage of 400-500 cycles per year. By comparison,
the technology on the workstation, such as PC, will
need to be replaced every three or four years.
Given this long battery life, Li-Nano offers a cost
per cycle that rivals SLA despite higher initial cost.
Over a five-year period, an SLA system will need to
be replaced at least 10 – 15 times while Li-Nano
is still going strong, resulting in a much lower
5-year total cost of ownership. Li-Nano delivers
high performance along with stability and safety
compared with older Lithium-Ion batteries.
Li-Nano offers the lightest-weight power option to
enhance workstation mobility. The runtime of 11 –
13 hours, compared to seven hours for SLA, supports
full-shift operation. Li-Nano also offers consistently
high performance throughout its lifespan compared
with other chemistries where runtime and reliability
begin to degrade relatively quickly.
Shipping of workstations powered by lithium is an
important consideration. The shipment of these
batteries often falls under U.S. Department of
Transportation Class 9 shipping regulations for
hazardous materials. Because of these restrictions,
most manufacturers must ship batteries separate
6. 6Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
from their workstations. This adds complexity, cost
and time to the deployment schedule. Metro has
designed its Li-Nano system so it can be shipped as
an integrated solution, which saves time and money
and reduces complexity.
Nickel Metal Hydride (NiMH)
NiMH power systems, pioneered by Metro, were
the first advanced chemistries designed to provide a
revolutionary combination of high energy density and
low weight compared to batteries with equal capacity
and long cycle life. Today, NiMH is a popular power
option because it:
• Supports runtimes more than adequate for an eight-
hour shift (11 – 13 hours compared to
7 hours for SLA).
• Offers substantially more battery capacity (up to 500
watt hours, compared to about 312 watt hours for
conventional SLA) to improve flexibility to support
power-intensive point-of-care technologies.
NiMH offers a long life-span, providing enough cycles
to last the same length as a workstation’s PC and
other integrated technology. The power system can be
replaced efficiently as part of an overall refresh of the
workstation. NiMH provides an option midway between
the SLA, which requires frequent replacement, and the
of Li-Nano.
Lithium-Ion Swappable Power Systems
Swappable batteries have emerged as a viable option
for improving productivity and simplifying workflows by
ensuring continuous uptime. Rather than plugging in the
entire workstation, the swappable batteries are
recharged separately. Metro’s swappable system supports
up to eight hours of operation between charges, and the
batteries are easy for nurses to change.
While swappable battery systems remain relatively
expensive, they can be an effective part of a mobile
power strategy by:
• Supporting workstations where full-shift, high-
mobility performance is essential, such as Emergency
Departments.
• Providing a solution when a hospital lacks space for
plugging in workstations for recharging, or faces
regulatory limits such as fire codes.
Sealed Lead Acid (SLA)
Currently, most mobile computing workstations
are powered by SLA – the same batteries used
in conventional automobiles. SLA offers one key
advantage – low initial cost, but Li-Nano offers the
lowest cost per cycle. In more demanding healthcare
settings, however, this advantage may be more than
offset by SLA’s drawbacks, which include:
• Short lifespan. SLA systems with very good cycle
batteries typically last for only 300 cycles – compared
with 5,000 cycles for Li-Nano. Short life spans
increase the maintenance demands on hospital
IT/biomedical departments to replace batteries
frequently, up to 3 times per year per cart. This
frequent turnover with SLA systems requires hospitals
to develop a supply chain to ensure a steady flow of
replacements, which adds substantially to cost.
For instance, given the weight of SLA batteries,
shipping costs may equal or exceed the actual price
of the battery.
7. 7Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
• Less runtime with each charge. SLA batteries
deteriorate each time they are re-charged, resulting in
shorter runtimes and less predictable performance.
• Sensitivity to heat/overcharging. This common
issue can result in damage to the batteries and
possibly off-gassing of the batteries, requiring
evacuation of the room or floor.
Despite these issues, SLA provides a low-cost option for
units that do not require full-shift operation or where
workstations are moved infrequently so they can remain
plugged in. In these settings, SLA supports power-
intensive applications such as telehealth, PACS and
fetal monitoring.
Making Advanced Chemistries
Work for You
Advanced chemistries offer distinct advantages for
clinical workflow and service- friendly replacement
cycles. However, advanced chemistry systems can
encounter problems if they are not properly designed,
implemented and maintained.
A key advantage to advanced chemistries is longer
runtimes – if they are properly designed and operated.
There is a delicate balance between designing a system
based on what the manufacturer’s specifications say
it can do and knowing how to design a system that
will last and perform well in a fast-paced clinical
environment based on clinical usage patterns,
recharging practices and other issues.
For example, most facilities need “full-shift” runtimes
and are pushing for faster recharge cycles. However,
when a battery is recharged rapidly, excess heat is
generated by the electronics and batteries, which
can negatively impact the overall performance and
lifespan of the system. Further, data from Metro’s
on-board diagnostics shows that customers rarely let a
workstations discharge below 70-80 percent capacity
before plugging them back in. Given this practice,
based on actual data, a system can be recharged within
one hour – rather than three hours if the battery was
more fully discharged – without generating potentially
damaging heat.
This example illustrates how, using data from actual
usage patterns, hospitals can operate more efficiently,
thereby maximizing the value of their investment in
advanced power systems.
To get the most from your investment in advanced
power options, work with a partner that understands
the unique environmental and user challenges in your
facility. For instance, Metro offers decades of experience
producing professional grade systems for healthcare
customers.
Advanced chemistries – properly deployed and managed
– offer substantial advantages over conventional SLA
batteries in terms of battery life, runtime, reliable
performance and cost per cycle. These benefits translate
into clinician satisfaction, smoother nursing workflows –
and better quality of care.
8. 8Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
Developing a Mobile
Power Strategy
A mobile power strategy offers flexibility for adapting
to a hospital’s unique needs today and in the future as
technology evolves. Four key issues for developing a
mobile power strategy include:.
1. Matching power systems to workflows.
There is no “one-size-fits-all” solution for mobile power.
Demands vary depending on a hospital’s workflows and
needs of specific departments. ICUs and emergency
departments have demanding requirements that put a
premium on full-shift mobility and continuous uptime;
swappable systems are the most likely solution. By
contrast, in some units, workstations may remain
plugged in throughout a shift. Hospitals should not
pay for an advanced power system when lower cost
solutions may be a better fit. Issues such as battery
capacity, runtime, recharge time and cycle life (displayed
in Figure 2) are key elements for evaluating which
power systems will optimize a specific workflow.
2. Enhancing workstation mobility and
ergonomic design.
For a nurse pushing a mobile computing workstation
over a long 8- or 12-hour shift, a difference of a few
pounds can make a big difference in productivity and
job satisfaction. Power systems have a significant effect
on the overall weight and mobility of workstations –
a critical issue for preventing repetitive stress injuries.
A workstation using an SLA power system weighs
about 27 pounds more than a similar workstation using
Li-Nano, which requires more effort to move the cart–
a major difference that adds up during long-term use.
0
40
20
60
80
100
120
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 4400 4600 4800 5000
Cycles
Charge Capacity
SLA
60% @
300 cycles
Li-Ion
75% @
1000 cycles
NiMH
70% @
2000 cycles
Li-Nano
80% @
5000 cycles
Figure 2 – Chemistry Cycle Comparison
Power system chemistries vary widely in terms of durability and performance.
• SLA systems begin to degrade almost immediately
after initial use, with performance declining sharply
toward replacement at about 300 cycles.
• Li-Ion systems degrade at a slower pace, providing
more consistent performance until replacement at
about 1,000 cycles.
• NiMH systems provide highly consistent
performance for most of a 2,000-cycle lifespan.
• Li-Nano provides breakthrough combination of
consistent performance for more than 5,000 cycles.
9. 9Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
3. Ensuring workstation compliance with
safety regulations.
To protect patients and staff, mobile computing
workstations must be certified to be in compliance
with UL 60601-1 safety standards. The standards are
designed to prevent electrical shocks, fires and other
risks. Integrated workstations, such as those offered by
Metro, include a controlled electrical system designed
from the ground up to meet the specific demands of
intensive healthcare environments. As a result, the
entire workstation is certified – as a system – to be in
compliance with UL 60601-1.
4. Streamlining monitoring and maintenance.
To keep a workstation fleet up and running smoothly,
IT and biomedical staff need visibility into the health of
power systems. This is especially important when using
less advanced power systems that need to be replaced
more frequently. More advanced power systems
include “intelligence” that enables IT/biomed staffs
to remotely monitor power system health on a single
computer screen.
Using Metro’s Dashboard software, staff can monitor
information about the entire fleet of workstations,
including status, charge level, charge time, remaining
runtime and battery health. Such advanced monitoring
systems offer easy access to the details essential to
staying current with power system maintenance.
Further, enhanced monitoring provides the data for
hospital leaders to manage and budget for power
system upgrades and replacements. Metro’s Dashboard
also provides the tools to compare performance
of workstations individually and by department –
information that can help hospital leaders adapt the
mobile power strategy as needed to support reliable,
cost-effective operations.
With $27.4 billion available in federal incentives
available to support EMR deployment, hospitals
will make substantial investments in point-of-care
systems that meet standards for ‘meaningful use.’
In planning these investments, it is important to
hospital leaders to be aware of the growing power
demands at the point of care – and the options
available for meeting the specific needs in units
across the facility. In addition, workstations and
power systems that ensure reliable performance
will help build clinician support and keep projects
on schedule.
Keys to success include:
• Work with a partner that can help you evaluate
the many power options with an in-depth
understanding of the opportunities and pitfalls
associated with today’s advanced chemistries.
• Adopt advanced monitoring features that
provide fleet-wide visibility into the status of
power systems to ensure timely maintenance
and advance planning/budgeting for system
replacement.
• Ensure that your partner is looking to the future
and has a track record of bringing advanced
solutions to the marketplace.
• Measure performance and improve processes.
Mobile Power: Supporting
‘Meaningful Use’
10. 10Mobile Computing Workstations: Developing a Mobile Power Strategy to Support Quality Care
Conclusions/Next Steps
As point-of-care technologies grow in sophistication,
a Mobile Power Strategy provides a foundation
for maximizing the strategic value of workstation
investments. Key issues:
• One size does NOT fit all. Evaluate the diverse
power needs in your facility, recognizing the different
demands placed on workstations in each unit.
• Know your options. This requires understanding
how advanced chemistry options can best support
your facility’s workflow – and the benefits and
considerations associated with each.
• Ensure scalability. Power demands at the point of
care will continue to escalate, so ensure that power
systems to scale as needed to support increasingly
energy-intensive solutions for improving care.
• Plan ahead. Establish a plan to measure
performance and improve processes to meet the
expectations of all stakeholders, including clinicians,
IT, administration and bio-medical staff.
• Choose a forward-looking partner. Finding the
right combination of power solutions for your facility
involves complex issues and fast-changing technology.
Work with a partner that has a strong track record of
bringing advanced solutions to the marketplace.